Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Can you decipher the two rows to find the hidden word?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Identify The phrase in the picture.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?